# CVE-2026-23338: linux: In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu/userq: Do not allow userspace to triv...

CVE-2026-23338 is fixed in linux on 1 platform by DEBIAN-CVE-2026-23338 (version 6.19.8-1), released March 25, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-23338
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0013
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 25, 2026

## Description

In the Linux kernel, the following vulnerability has been resolved:  drm/amdgpu/userq: Do not allow userspace to trivially triger kernel warnings  Userspace can either deliberately pass in the too small num_fences, or the required number can legitimately grow between the two calls to the userq wait ioctl. In both cases we do not want the emit the kernel warning backtrace since nothing is wrong with the kernel and userspace will simply get an errno reported back. So lets simply drop the WARN_ONs.  (cherry picked from commit 2c333ea579de6cc20ea7bc50e9595ef72863e65c)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 14 | 6.19.8-1 | [DEBIAN-CVE-2026-23338](https://patchblox.com/security/data/fix/linux/debian-cve-2026-23338.md) | Mar 25, 2026 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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